CN115262254B - Efficient tie-dyeing method - Google Patents
Efficient tie-dyeing method Download PDFInfo
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- CN115262254B CN115262254B CN202211033007.4A CN202211033007A CN115262254B CN 115262254 B CN115262254 B CN 115262254B CN 202211033007 A CN202211033007 A CN 202211033007A CN 115262254 B CN115262254 B CN 115262254B
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/12—Reserving parts of the material before dyeing or printing ; Locally decreasing dye affinity by chemical means
Abstract
The application discloses a high-efficiency tie-dyeing method, which comprises the following steps: twisting, namely sewing a twisted wire into the fabric according to the outline of the pattern on the fabric, and tensioning the twisted wire to tighten the fabric; the twisted wire is water-soluble polyvinyl alcohol fiber; dyeing, namely immersing the fastened fabric into a dye liquid to enable the dye to be attached to the fabric, washing away floating dye on the fabric by using a rinsing liquid, exposing the wrung fabric to air, and oxidizing the dye in the fabric; washing, namely placing the dyed fabric into a washing liquid for washing, wherein the highest temperature of the washing liquid is higher than the glass transition temperature of the water-soluble polyvinyl alcohol fiber so as to dissolve the ligature on the fabric; and (5) drying, namely drying the washed fabric to obtain the tie-dyed fabric. The ligature made of water-soluble polyvinyl alcohol fiber replaces the common ligature, can be directly dissolved in the cleaning procedure, solves the problem that the fabric is easy to break when the stitches are removed, improves the quality of tie-dyed products, simplifies the tie-dyeing process flow, and is convenient for tie-dyeing the inheritance of non-matter cultural heritage.
Description
Technical Field
The application belongs to the technical field of printing and dyeing, and particularly relates to a high-efficiency tie-dyeing method.
Background
Tie-dyeing is called as 'twisting-vals', which is an old textile dyeing technology in China, and the tied part can not be dyed by dye through partially tying the fabric during dyeing. As an important inheritance of classical culture in China, tie-dyeing is also listed in non-material cultural heritage in China for protection.
The tie-dyeing process mainly comprises two parts of tie-up and dyeing, wherein the fabric is subjected to tie-up, sewing, binding, clamping and the like in various modes by means of yarn, thread, rope and the like, and then the tied fabric is placed into a dye vat for dyeing. Because of the variety of binding techniques, the patterns presented after dyeing are also different, and the artistic effect is difficult to achieve by mechanical printing and dyeing, the binding is usually performed by manual operation.
The tie-dyeing process mainly comprises pattern drawing, twisting, soaking, cloth dyeing, steaming, sun drying, stitch removing, cloth grinding and the like, and in order to meet the complexity of patterns, the fabric is twisted in a stitch mode in the tie-dyeing process, the stitched-in twisted threads need to be tightly inserted into the fabric to ensure that the printed patterns are clear, but the twisted threads and the fabric are too tight when the stitches are removed, so that great trouble exists. In the stitch removing method, as the gap is too small, the cutting edge of the stitch removing tool is difficult to penetrate, and the knifepoint of the stitch removing tool is easy to puncture the fabric; or the cutter point of the cutter is directly used for cutting the twisted wire on the surface of the fabric, and the hidden danger of cutting the fabric exists in the stitch removing method, so that the color of the fabric is greatly reduced. Therefore, the fabric produced according to the traditional tie-dyeing process has higher breakage rate, and a skilled technician is required to prepare the fabric with better color.
Disclosure of Invention
The application aims to solve the technical problems, and provides a high-efficiency tie-dyeing method, which solves the problems of difficult stitch removal and easy stitch removal and fabric breakage in the prior art.
In order to solve the problems, the application is realized according to the following technical scheme:
the application provides a high-efficiency tie-dyeing method, which comprises the following steps:
twisting, namely sewing a twisted wire into the fabric according to the outline of the pattern on the fabric, and tensioning the twisted wire to tighten the fabric; the twisted wire is water-soluble polyvinyl alcohol fiber;
dyeing, namely immersing the fastened fabric into a dye liquid to enable the dye to be attached to the fabric, washing away floating dye on the fabric by using a rinsing liquid, exposing the wrung fabric to air, and oxidizing the dye in the fabric;
washing, namely placing the dyed fabric into a washing liquid for washing, wherein the highest temperature of the washing liquid is higher than the glass transition temperature of the water-soluble polyvinyl alcohol fiber so as to dissolve the ligature on the fabric;
and (5) drying, namely drying the washed fabric to obtain the tie-dyed fabric.
In another preferred embodiment, the dissolution temperature of the water-soluble linear polyethylene fiber is 60-80 ℃.
In another preferred embodiment, the fabric is a fabric modified with a cationic modifier;
the cationic modifier comprises a cationic modifier WLS-20, a cationic modifier FK-316, a cationic modifier CH and a cationic modifier LD-8202.
In another preferred embodiment, the cleaning step specifically includes:
and (3) putting the dyed fabric into a soluble sodium salt solution for cleaning, and gradually heating the soluble sodium salt solution to ensure that the temperature of the soluble sodium salt solution is higher than the glass transition temperature of the water-soluble polyvinyl alcohol fibers.
In another preferred example, the concentration of sodium ions in the soluble sodium salt solution is 0.2 to 0.25mol/L.
In another preferred example, the soluble sodium salt is one of sodium chloride, sodium sulfate, sodium carbonate, and sodium bicarbonate.
In another preferred embodiment, the rinse solution includes:
an acidic rinse solution comprising a citric acid solution and a glacial acetic acid solution;
and an alkaline rinse solution, wherein the alkaline rinse solution is a soap solution.
In another preferred embodiment, the dye is indigo.
In another preferred example, the dyeing step is repeated 10 to 20 times, in which:
immersing the fabric into the dye solution for 3-5 min to enable the dye to be attached to the fabric;
exposing the wrung fabric to air for 3-5 min to oxidize the dye in the fabric.
In another preferred embodiment, the temperature of the drying is 55℃to 65 ℃.
Compared with the prior art, the application has the beneficial effects that:
in the embodiment of the application, the wring yarn made of the water-soluble polyvinyl alcohol fiber replaces the wring yarn made of the common tie-dyed cotton, hemp and other insoluble materials, in the cleaning procedure, the water-soluble polyvinyl alcohol fiber can be directly dissolved in the cleaning procedure because the highest temperature of the cleaning fluid is higher than the glass transition temperature of the water-soluble polyvinyl alcohol fiber, thereby solving the difficult problems of difficult stitch removal and easy breakage of fabric stitch removal in the stitch removal process, improving the quality of tie-dyed products, simplifying the tie-dyeing process flow, improving the production efficiency, facilitating tie-dyeing, being convenient for the application of the non-matter cultural heritage in modern life, not only meeting the modern quality and cost requirements of fabrics such as modern clothing home furnishings and the like, but also not losing the non-residual cultural background.
Detailed Description
The following description of the preferred embodiments of the present application is provided for the purpose of illustration and explanation only and is not intended to limit the present application.
Although the present embodiment is discussed with indigo as the dye, it should be understood that the dye of the present application should not be limited to indigo dye, and other dyes with the same property as indigo at room temperature which can be colored at a temperature lower than 60 ℃ are all within the scope of the present application, such as white gourd, pericarpium Granati, gardenia, walnut shell, saffron, etc.
Modern tie dyeing processes typically include: drawing, tracing, platemaking, printing, binding, desizing, soaking, dyeing, rinsing, oxidizing, removing stitches, rinsing, airing, leveling and other 14 processes. The new grey cloth is generally adopted for tie-dyeing, the grey cloth refers to cloth which is not subjected to printing and dyeing processing, slurry remained when the grey cloth is woven is remained on the surface of the grey cloth, during tie-dyeing, the slurry on the surface of the grey cloth is required to be removed to improve the tie-dyeing effect, and hot water or alkaline solution can be adopted to remove the slurry on the grey cloth.
Drawing, tracing, platemaking and printing processes can obtain a pattern to be printed on the surface of the grey cloth, and the pattern can be used as a reference standard when the needle is pricked. The pattern to be printed and dyed is generally drawn on white paper, then the pattern is drawn on a film plastic cloth, the film plastic cloth is punched and cut according to the pattern to obtain a film template, then the film template is laid on a gray cloth, and water-soluble pigment is brushed on the template to obtain the pattern with the same outline on the gray cloth.
Binding is a main process of binding dyeing, which is different from other dyeing processes, and the bound part cannot be dyed by dye by binding part of the fabric during dyeing. The binding method of various forms such as binding, sewing, binding, attaching and clamping has the uniqueness of binding patterns, wherein the sewing is a main binding means for making complex patterns by binding, and is also the most difficult binding method, one-needle sewing is needed according to the pattern contour line on the grey cloth, after each pattern sewing is completed, the binding line is pulled tightly to lead the grey cloth to be bound, the binding line is knotted, and the binding part is difficult to be adhered by dye when being dyed, so that the primary color of the grey cloth remains.
In the stitch removing process, because the binding between the grey cloth and the ligature is too tight, the ligature is difficult to be smoothly removed by a stitch removing tool, or the grey cloth is easy to be broken by the stitch removing tool during stitch removing. Generally, a skilled technician can complete the stitch removal process to produce a fabric with better color, which also presents great difficulties in the inheritance of the tie-dyeing process.
The application relates to a high-efficiency tie-dyeing method, which comprises the following steps:
step S1: twisting, namely sewing a twisted wire into the fabric according to the outline of the pattern on the fabric, and tensioning the twisted wire to tighten the fabric; the twisted wire is water-soluble polyvinyl alcohol fiber;
step S2: dyeing, namely immersing the fastened fabric into a dye liquid to enable the dye to be attached to the fabric, washing away floating dye on the fabric by using a rinsing liquid, exposing the wrung fabric to air, and oxidizing the dye in the fabric;
step S3: washing, namely placing the dyed fabric into a washing liquid for washing, wherein the highest temperature of the washing liquid is higher than the glass transition temperature of the water-soluble polyvinyl alcohol fiber so as to dissolve the ligature on the fabric;
step S4: and (5) drying, namely drying the washed fabric to obtain the tie-dyed fabric.
In the embodiment, the wring wire made of the water-soluble polyvinyl alcohol fiber replaces the wring wire made of the common tie-dyed cotton, hemp and other insoluble materials, and in the cleaning procedure, the wring wire can be directly dissolved in the cleaning procedure because the highest temperature of the cleaning solution is higher than the glass transition temperature of the water-soluble polyvinyl alcohol fiber, thereby solving the difficult problems of difficult stitch removal and easy breakage of fabric stitch removal in the stitch removal process, improving the quality of tie-dyed products, simplifying the tie-dyeing process flow and facilitating the tie-dyeing of the inheritance of non-matter cultural heritage.
Step S1: twisting, namely sewing a twisted wire into the fabric according to the outline of the pattern on the fabric, and tensioning the twisted wire to tighten the fabric; the twisted wire is water-soluble polyvinyl alcohol fiber.
The water-soluble polyvinyl alcohol fiber (water-soluble PVA fiber) is a water-soluble synthetic fiber, has physical properties similar to those of cotton, hemp and other materials, has certain strength and ductility, can be tightly attached to fabrics during twisting, and can not be stretched due to tensile force generated by compression of grey cloth.
Step S2: dyeing, namely immersing the fastened fabric into a dye solution to enable the dye to be attached to the fabric, washing away floating dye on the fabric by using a rinsing solution, exposing the wrung fabric to air, and oxidizing the dye in the fabric.
The dyeing process can be roughly divided into three processes: dip dyeing, rinsing and oxidation. The dye used for dip dyeing in the embodiment is indigo dye, the indigo is the most widely used vat dye in the printing and dyeing industry, and the dyed fabric with the indigo has better color fastness. It is known that many indigo-containing materials, such as isatis root, polygonum, woad, wood blue, and martin, exist in these plants in the form of an indigo that is soluble in water and that undergoes a condensation reaction of two molecules of the indigo under alkaline conditions to form water-insoluble indigo.
In the dip dyeing process, in order to dissolve the indigo, the dye solution generally also contains an alkaline agent, typically sodium hydroxide, which provides an alkaline environment, and a reducing agent, which may be sodium hydrosulfite or glucose. Indigo generally exists in dye solutions in four forms, the first form being oxidized indigo, which is insoluble in water; the second form is leuco acid, when the reduction potential of the indigo is 760mV in a weak alkaline environment, the indigo is reduced into the leuco acid which is slightly soluble in water, and the higher the specific column of the leuco acid in the dye liquor is, the worse the permeability of the fabric is when the fabric is dyed, the heavier the formed flooding is, and the worse the color fastness is; the third form is the leuco form of sodium monophenolate ion, which is reduced to a water-soluble leuco form, also called indigo, when the reduction potential of indigo is-760 mV in an aqueous solution of sufficient reducing and alkaline agents, the leuco form being the best form of indigo for dyeing; the fourth form is bisphenol sodium salt, in which the indigo is reduced to bisphenol sodium salt which is easily soluble in water and is adsorbed on the fibers of the fabric during dyeing, in an aqueous solution of an excess of a reducing agent and an alkaline agent, far beyond the reduction potential of-760 mV of the indigo, but bisphenol sodium salt is also easily redissolved in an aqueous solution, i.e. the indigo in form of bisphenol sodium salt is unsuitable for dyeing. Therefore, the concentration of the alkaline agent and the reducing agent needs to be reasonably controlled, and the proportion of the indigo in the dye, which exists in a leuco form, is increased.
In a preferred embodiment, the selected dyed fabric is modified with a cationic modifier selected from the group consisting of cationic modifier WLS-20, cationic modifier FK-316, cationic modifier CH and cationic modifier LD-8202. Because the fabric is mostly made of cotton fibers, the surface layer of the cotton fibers is cotton cellulose anions, leuco indigo suitable for dyeing is also anions, and cotton cellulose anions and indigo anions are like-pole repulsive, so that the dyeing rate is lower, and the color fastness is poorer. The fabric is modified by the cationic modifier, so that cations are obtained on the surface of the fabric to adsorb the indigo anions, the acting force between the fabric and the indigo is enhanced, and the color fastness of the indigo is improved.
In the rinsing process, the rinsing liquid can be clear water. In a preferred embodiment, the rinse solution comprises an acidic rinse solution and an alkaline rinse solution, the acidic rinse solution is a weakly acidic citric acid solution and a glacial acetic acid solution, and the citric acid solution and the glacial acetic acid solution can clean indigo with poor color fastness on the surface of the fabric; the alkaline rinse solution is a weak alkaline soapy water. In an alkaline environment without a reducing agent, the alkaline environment of the fabric can be maintained through alkaline rinsing liquid, so that the speed of oxidizing indigo to indigo is increased, but the alkaline environment is too strong, fibers of the fabric are easily damaged, and meanwhile, in order to meet the requirement that the final PH value of class B standard in national textile product basic safety technical Specification GB 18401-2010 is 4-7.5, an acidic rinsing liquid is required to be added to adjust the PH value of the fabric, so that the fibers of the fabric are not easy to damage, and the national standard is met.
In a preferred embodiment, the dyeing process is repeated 10-20 times, and the fabric is immersed in the dye solution for 3-5 min to attach the dye to the fabric; exposing the wrung fabric to air for 3-5 min to oxidize the dye in the fabric. The indigo dye has small affinity with fabric fibers, the dye uptake is low, the dye uptake is about 10% each time, the high color quantity can be obtained through multiple dip dyeing and oxidation, the indigo white is oxidized layer by layer, the firmness of attaching the indigo on the fabric can be improved, and the dyeing color depth of the fabric can be adjusted by adjusting the dyeing times.
Step S3: and (3) cleaning, namely putting the dyed fabric into a cleaning solution for cleaning, wherein the highest temperature of the cleaning solution is higher than the glass transition temperature of the water-soluble polyvinyl alcohol fiber so as to dissolve the ligature on the fabric.
In step S3, the fabric may be washed with clear water, and the clear water is gradually warmed up from room temperature until the water-soluble polyvinyl alcohol fibers are completely dissolved. The dissolution process of the water-soluble polyvinyl alcohol fibers can be divided into two stages: swelling and dissolving, wherein the water-soluble polyvinyl alcohol fiber is hardly dissolved before the water temperature reaches the dissolving temperature of the water-soluble polyvinyl alcohol fiber, the stage is called a swelling stage, the kinetic energy of endothermic water molecules is continuously increased along with the continuous increase of the temperature, the penetration capacity of the water molecules into the water-soluble polyvinyl alcohol fiber is gradually enhanced, meanwhile, the water-soluble polyvinyl alcohol fiber is also expanded in a heat absorption mode, the volume is continuously increased, the undyed area on the fabric can be completely covered, the undyed area is prevented from being adhered with indigo, and the definition of the contour lines of patterns on the fabric can be ensured. After the water temperature exceeds the dissolution temperature, the water-soluble polyvinyl alcohol fiber starts to dissolve, after the water temperature exceeds the vitrification temperature, the water-soluble polyvinyl alcohol fiber further swells, and as the water-soluble polyvinyl alcohol fiber has certain crystallinity, the water-soluble polyvinyl alcohol fiber needs to absorb enough heat to enable molecules in a crystal area to break away from the constraint of crystal lattices when completely dissolved, and the molecules are rapidly diffused in water until completely dissolved.
The dissolution temperature of the water-soluble linear polyethylene fibers adopted in the embodiment is 60-80 ℃. At room temperature, the water temperature in the dye vat is about 20-25 ℃, the higher the temperature is, the higher the water temperature required for cleaning is, and when the water temperature is over 80 ℃, the fabric can shrink greatly, the adhesion between the indigo and the fabric is reduced, and the color fastness of the indigo on the fabric is further reduced.
In practice, the applicant found that the dissolved polyvinyl alcohol fibers are not completely dissolved in the clear water, and that there are still partially flocculent polyvinyl alcohol fibers floating on the water surface and easily adhering to the surface of the fabric during the cleaning process, preventing the area to be further cleaned from being adhered to, and that after drying, the area covered by the polyvinyl alcohol fibers is not cleaned by indigo, resulting in a large number of uneven color spots on the fabric, which affects the tie-dyeing effect of the fabric.
In a preferred embodiment, the cleaning step specifically comprises:
step S301: and (3) putting the dyed fabric into a soluble sodium salt solution for cleaning, and gradually heating the soluble sodium salt solution to ensure that the temperature of the soluble sodium salt solution is higher than the glass transition temperature of the water-soluble polyvinyl alcohol fibers.
The sodium ions are metal cations with stronger hydration capability, and the hydroxyl groups of water molecules combined with the polyvinyl alcohol in the solution are adsorbed by a strong electric field generated by the sodium ions, so that the dissolved polyvinyl alcohol is quickly gelled, and further gel with larger particles is formed, and the gel is precipitated at the bottom of the cleaning liquid, so that the adhesion of the gel to fabrics can be prevented. Meanwhile, the fabric is obtained after the cationic modifier is modified, a large amount of modifier cations exist on the surface layer and are in homopolar repulsion with sodium ions to prevent the sodium ions from approaching the fabric, so that flocculent polyvinyl alcohol can be prevented from being attached to the surface of the fabric.
Specifically, the soluble sodium salt is one of sodium chloride, sodium sulfate, sodium carbonate and sodium bicarbonate, the concentration of sodium ions is 0.2-0.25 mol/L, the solution prepared by sodium carbonate and sodium bicarbonate is preferably used as cleaning solution in the embodiment, and under the concentration, the alkaline environment provided by sodium ions can promote the rapid dissolution of the soluble polyvinyl alcohol fibers, and on the other hand, the polymerization of sodium ions on the dissolved polyvinyl alcohol fibers promotes the rapid gelation and precipitation of the soluble polyvinyl alcohol fibers.
In a preferred embodiment, the washed fabric is rinsed again from the soluble sodium salt solution in clear water to clean the remaining salt solution from the fabric.
Step S4: and (5) drying, namely drying the washed fabric to obtain the tie-dyed fabric.
The washed fabric can be naturally air-dried in a light-proof environment, so that direct sunlight is prevented from reducing the color fastness of indigo. In a preferred embodiment, the fabric is dried in a dryer at a temperature of 55-65 ℃ at which the fabric can be rapidly dewatered and the cotton fibers on the fabric are not easily denatured and shrunk at high temperature, and the color fastness of the indigo is kept good.
(1) Example experiment:
example 1
In the embodiment, the fabric is square cotton with the size of 10cm x 10cm to prepare desizing cloth; the center of the fabric is provided with a circular pattern with a large diameter of 3cm and a small diameter of 2 cm. The tie-dyeing method comprises the following steps:
step S1: twisting, namely sewing a twisted wire into the fabric according to the outline of the pattern on the fabric, and tensioning the twisted wire to tighten the fabric; the twisted wire is water-soluble polyvinyl alcohol fiber. Adopting water-soluble polyvinyl alcohol fiber with a dissolution temperature of 60 ℃; the fabric is modified by a cationic modifier WLS-20;
step S2: dyeing, namely immersing the fastened fabric into a dye solution to enable the dye to be attached to the fabric, washing away floating dye on the fabric by using a rinsing solution, exposing the wrung fabric to air, and oxidizing the dye in the fabric. The dye adopts indigo, the dyeing step is repeated for 10 times, the time for immersing in the dye liquor is 5min, and the time for oxidizing in the air is 5min; the rinse liquid adopts a soap solution with the concentration of 2% and a citric acid solution with the concentration of 1%, the soap solution is used for rinsing and fixing color, and then the citric acid solution is used for regulating the PH value.
Step S3: and (3) cleaning, namely putting the dyed fabric into a cleaning solution for cleaning, wherein the highest temperature of the cleaning solution is higher than the glass transition temperature of the water-soluble polyvinyl alcohol fiber so as to dissolve the ligature on the fabric. The cleaning solution is sodium carbonate solution with the concentration of 0.1mol/L and the sodium ion concentration of 0.2mol/L. The temperature of the dissolution solution was raised from 25 ℃ to 70 ℃ and maintained at 70 ℃ until the fabric was fully developed.
Step S4: and (5) drying, namely drying the washed fabric to obtain the tie-dyed fabric. And drying by adopting a dryer, wherein the drying temperature is 60 ℃.
Example 2
In the embodiment, the fabric is square cotton with the size of 10cm x 10cm to prepare desizing cloth; the pattern on the fabric is a circular ring with a large diameter of 3cm and a small diameter of 2 cm. The tie-dyeing method comprises the following steps:
step S1: twisting, namely sewing a twisted wire into the fabric according to the outline of the pattern on the fabric, and tensioning the twisted wire to tighten the fabric; the twisted wire is water-soluble polyvinyl alcohol fiber. Adopting water-soluble polyvinyl alcohol fiber with a dissolution temperature of 80 ℃; the fabric is modified by a cationic modifier WLS-20;
step S2: dyeing, namely immersing the fastened fabric into a dye solution to enable the dye to be attached to the fabric, washing away floating dye on the fabric by using a rinsing solution, exposing the wrung fabric to air, and oxidizing the dye in the fabric. The dye adopts indigo, the dyeing step is repeated 18 times, the time for immersing in the dye liquor is 3min, and the time for oxidizing in the air is 3min; the rinse liquid adopts a soap solution with the concentration of 2% and a citric acid solution with the concentration of 1%, the soap solution is used for rinsing and fixing color, and then the citric acid solution is used for regulating the PH value.
Step S3: and (3) cleaning, namely putting the dyed fabric into a cleaning solution for cleaning, wherein the highest temperature of the cleaning solution is higher than the glass transition temperature of the water-soluble polyvinyl alcohol fiber so as to dissolve the ligature on the fabric. The cleaning solution is sodium carbonate solution with the concentration of 0.1mol/L and the sodium ion concentration of 0.2mol/L. The temperature of the solution was raised from 25 ℃ to 85 ℃ and maintained at 85 ℃ until the fabric was fully developed.
Step S4: and (5) drying, namely drying the washed fabric to obtain the tie-dyed fabric. And drying by adopting a dryer, wherein the drying temperature is 60 ℃.
Example 3
In the embodiment, the fabric is square cotton with the size of 10cm x 10cm to prepare desizing cloth; the pattern on the fabric is a circular ring with a large diameter of 3cm and a small diameter of 2 cm. The tie-dyeing method comprises the following steps:
step S1: twisting, namely sewing a twisted wire into the fabric according to the outline of the pattern on the fabric, and tensioning the twisted wire to tighten the fabric; the twisted wire is water-soluble polyvinyl alcohol fiber. Adopting water-soluble polyvinyl alcohol fiber with a dissolution temperature of 60 ℃; the fabric is modified by a cationic modifier WLS-20;
step S2: dyeing, namely immersing the fastened fabric into a dye solution to enable the dye to be attached to the fabric, washing away floating dye on the fabric by using a rinsing solution, exposing the wrung fabric to air, and oxidizing the dye in the fabric. The dye adopts indigo, the dyeing step is repeated for 10 times, the time for immersing in the dye liquor is 5min, and the time for oxidizing in the air is 5min; the rinse liquid adopts a soap solution with the concentration of 2% and a citric acid solution with the concentration of 1%, the soap solution is used for rinsing and fixing color, and then the citric acid solution is used for regulating the PH value.
Step S3: and (3) cleaning, namely putting the dyed fabric into a cleaning solution for cleaning, wherein the highest temperature of the cleaning solution is higher than the glass transition temperature of the water-soluble polyvinyl alcohol fiber so as to dissolve the ligature on the fabric. The cleaning solution is sodium chloride solution with the concentration of 0.2mol/L, and the sodium ion concentration of the cleaning solution is 0.2mol/L. The temperature of the dissolution solution was raised from 25 ℃ to 70 ℃ and maintained at 70 ℃ until the fabric was fully developed.
Step S4: and (5) drying, namely drying the washed fabric to obtain the tie-dyed fabric. And drying by adopting a dryer, wherein the drying temperature is 60 ℃.
Comparative example 1
The difference from example 1 is that:
the ligature adopted in the step 1 is cotton thread;
and (3) removing the ligature by using tools such as scissors before cleaning in the step (3).
Comparative example 2
The difference from example 1 is that:
the fabric in step 1 was not modified by the cationic modifier WLS-20.
Comparative example 3
The difference from example 1 is that:
the dissolution temperature of the water-soluble polyvinyl alcohol fiber in the step 1 is 90 ℃;
in step 3, the temperature of the dissolution solution is raised from 25 ℃ to 95 ℃ and maintained at 95 ℃ until the fabric is fully developed.
Comparative example 4
The difference from example 1 is that:
and step 3, adopting clean water as cleaning liquid.
(2) Sensory testing:
the project is as follows:
visually observing the color distribution of the tie-dyed fabric sample, and the definition of the outline and the contour line of the pattern;
and comparing and identifying the color of the fabric through an international color chart comparison table.
(3) Color fastness testing:
after spreading and spreading the tie-dyed fabric sample, measuring the ring width of the outline of the ring (with the estimated reading number) by using a millimeter scale, drawing a'm' -shaped line by using a marker pen with a 45-degree included angle as the center, taking the intersection line of the line and the pattern as a sample measuring point, and taking the average width of 8 sample measuring points as the ring width.
The radiation intensity was 350nm (60W/m using a xenon aging laboratory box model HZ-2011 (Dongguan power display instrument technology Co., ltd.) 2 ) The temperature is 42 ℃ and the humidity is 38%, the tie-dyed fabric sample is arranged in a xenon aging experimental box to be exposed for 10 hours, then is washed in clean water at 25 ℃, and is dried in a 60 ℃ drying box. And taking the same sample measuring point after drying, measuring and calculating the ring width.
Conclusion: as is evident from the comparison, the fabrics prepared in examples 1 to 3 have uniform color distribution, clear pattern contour lines and better color fastness than the prior art.
The present application is not limited to the preferred embodiments, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical principles of the present application are within the scope of the technical proposal of the present application.
Claims (4)
1. An efficient tie-dyeing method is characterized by comprising the following steps:
twisting, namely sewing a twisted wire into the fabric according to the outline of the pattern on the fabric, and tensioning the twisted wire to tighten the fabric; the twisted wire is water-soluble polyvinyl alcohol fiber, and the dissolution temperature of the water-soluble polyvinyl alcohol fiber is 60-80 ℃;
dyeing, namely immersing the fastened fabric into the dye solution for 3-5 min to enable the dye to be attached to the fabric, washing away floating dye on the fabric by using the rinse solution, exposing the wrung fabric to air for 3-5 min to enable the dye in the fabric to be oxidized; the fabric is modified by adopting a cationic modifier; the cationic modifier comprises a cationic modifier WLS-20, a cationic modifier FK-316, a cationic modifier CH and a cationic modifier LD-8202;
wherein the dyeing process is repeated for 10-20 times, and the dye adopts indigo;
washing, namely placing the dyed fabric into a washing liquid for washing, wherein the highest temperature of the washing liquid is higher than the glass transition temperature of the water-soluble polyvinyl alcohol fiber so as to dissolve the ligature on the fabric; the cleaning step specifically comprises the following steps: putting the dyed fabric into a soluble sodium salt solution for cleaning, and gradually heating the soluble sodium salt solution to ensure that the temperature of the soluble sodium salt solution is higher than the glass transition temperature of the water-soluble polyvinyl alcohol fiber, wherein the concentration of sodium ions in the soluble sodium salt solution is 0.2-0.25 mol/L;
and (5) drying, namely drying the washed fabric to obtain the tie-dyed fabric.
2. An efficient tie-dyeing method according to claim 1, characterized in that:
the soluble sodium salt is one of sodium chloride, sodium sulfate, sodium carbonate and sodium bicarbonate.
3. The efficient tie-dyeing method according to claim 1, wherein the rinse solution comprises:
an acidic rinse solution comprising a citric acid solution and a glacial acetic acid solution;
and an alkaline rinse solution, wherein the alkaline rinse solution is a soap solution.
4. An efficient tie-dyeing method according to claim 1, characterized in that:
the temperature of the drying is 55-65 ℃.
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| CN202211033007.4A CN115262254B (en) | 2022-08-26 | 2022-08-26 | Efficient tie-dyeing method |
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| CN115262254B true CN115262254B (en) | 2023-09-22 |
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| CN202211033007.4A Active CN115262254B (en) | 2022-08-26 | 2022-08-26 | Efficient tie-dyeing method |
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| CN115262254A (en) | 2022-11-01 |
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